POLICE in the US are investigating whether a pizza delivery driver was killed so his uniform and a pizza box could be used in the slaying of a prison chief.

Investigators are trying to determine whether delivery driver Nathan Leon's murder was to procure a pizza box and Domino's Pizza uniform to help persuade Colorado corrections chief Tom Clements to open his front door. Mr Clements was gunned down at his home, and the prime suspect died later in a shootout with police.

And shocking video has emerged of a man being swallowed by a sinkhole in China. Security guard Yang Jiabin was walking in Shenzhen near a construction site when an 8-metre wide, 16-metre deep sinkhole opened up beneath him. Attempts to revive him were unsuccessful.